BASE STATION DEVICE, TERMINAL DEVICE AND CLOSED-LOOP CONTROL METHOD Russian patent published in 2012 - IPC H04W4/00 

FIELD: information technology.

SUBSTANCE: base station device permits lowering quantity of feedback via DL-CSI in radio communications system of TDD type, where DL bandwidth differs from UL bandwidth. In this device, demultiplexing module splits pilot signal UL, DL-CQI and DL-CSI returned from multiple UEs as communication partners; channel evaluation module performs channel sounding using UL pilot signal from UE, where DL-channel and UL-channel are allocated by means of overlaying part of bandwidth in order to receive UL-CSI; DL-CSI receive module for control performs DL-CSI interpolation using DL-CSI of certain RB, contained in bandwidth where DL-channel and UL-channel returned from UE do not overlay; and closed loop DL control module combines evaluated UL-CSI and interpolated DL-CSI in order to use them as DL-CSI for closed loop DL control.

EFFECT: higher throughput.

6 cl, 12 dwg